Chemical fire-extinguisher



(lNo Model.)

G. H. GORHY 8v H. B. MITCHELL.

CHEMICAL PIRE BXTINGUISHBR.

No. 366,649. Patented July 19, 1887.

frzz/efzo/zf Georg@ .71. Coffey Harp/f 232m y Ma@ UNITED STATES PATENT OFFICEo GEORGE H. COREY, OF COREY,h DAKOTA TERRITORY, AND HARRIS D. MITCHELL, OF MALDEN, MASSACHUSETTS.

EXTINGUISHER.

SPECIFICATION forming part of Letters Patent No. 366,649, dated July 19, 1887.

Application filed h [areh 14, 1887.

VT0 all whom, t may concern,.-

Be it known that we, GEORGE H. CoREY, of Corey, in the county of Valworth and Territoryr of Dakota, and HAREIs B. MITCHELL, of Malden, in the county of Middlesex and State of hilassachusetts, have invented a new and useful Improvement in Chemical Fire-Extinguishers, and we do hereby declare that the following is afull, clear, and exact description of the same.

Our invention relates to chemical fire-extinguishers, and particularly to that class in which the body of the vessel contains a chemical solution, and fragile vessels eontaininglan exciting chemical are held within the chamber, with means for breaking the vessels,and thus generating the gas for extinguishing the fire.

The object of ourinvention is to simplify the construction and reduce the number of parts so as to produce an extinguisher which shall be very compact and easy to operate.

The invention consists in the combinations of devices hereinafter fully described.

In the accompanying drawing the figure rcpresents asectional view of the invention with he fragile vessels in dotted lines.

In the drawing, A represents the main receptacle in which the gas is generated. This may be made of metal, of any desirable shape and size, and is preferably provided with a handle, a, which we have shown in the drawing as arranged upon one side. This may, however, be arranged as a bail on the top, if desired. The cover B is preferably formed with a screw-tlnemied flange adapted to a serewthread upon the upper edge of the vessel, and is thus securely held in place.' Any suitable opening may be made for the admission of the chemicals tothe interior ofthe chamber. Frein the cover frames E E extend downwardly, terminating in holders or trays e e, which are adapted to support the fragile vessels D D, which may be of any desired shape or size. These vessels contain the exciting chemical, and when broken their contents llowinginto the solution contained in the main receptacle will create the extinguishing-gas in the wellknown manner. A tube, f, extends through the cover down to near the bottom of the receptacle, having a flaring end, k. This tube Serial No. 230,787. (No model.)

has tight bearingconneetions with the cover,

but is adapted to be rotated through the opening therein. It passes down between the fragile vessels D D, and at this point has arms ce extending upon opposite sides thereof, these armsbeing provided upon their ends with balls or hammers gg,which,when the tube is turned. move in a plane which includes the fragile vessels. The tube is provided at its upper end with a handle, 71, and when this handle is tnrnedthe hammers f/ come in forcible contact with the fragile vessels and break them, and thus the contents are released.

lUpon the cover a discharge-pipe, t', is fixed, andthe tube f is in close proximity to this spout, having a close connection therewith. The opening through the tube extends from the bottom to the point l, and. at this point curves outwardly to the periphery of the tube, and in direct line with the opening in the discharge-spoutwhich also comes to the periphery at the same point. It will thus be seen that when the handle is turned in one direetion the openings in the tube and the spout will register, and when turned in the opposite direction they will be thrown out of line. Snitable stops are provided tolimit the movement of the tube, and a locking device, l, may be used to lock it securely in place and prevent turning.

The arms containing the hammers are arranged in such relation to the opening in the top of the tube that when the tube is in its normal position and the opening out of line with the opening in the discharge-pipe the hammers will be held away from the walls of the fragile vessels, but when the handle is turned to bring the openingsin to register with each other, this movement willeause the hammers to strike violently against the fragile vessels, and thus shatter them. As the gasis generated by this movement, it will thus be seen that a clear passage. will be provided just at the proper time from the interior of the chamber to the outside, and all independent means for hoseconneetions and the like thereby dispensed with.

It will be observed that the trays which sup portthe fragile vessels as well as the dischargetube and all the working parts are connected IOO with the cover, so that they are all supported thereon and may be inserted or removed by manipulation of the cover.

We are aware that a receptacle containing V5 one liquid and fragile vessels inclosing another liquid, in combination with hammers for breaking the fragile vessels and thereby mixing the gas-producing liquids, is not new. Ourinvention includes this general subjectro matter, and consists only of the specific devices designed for simplicity and vcertainty of action, and is an improvement in the class.

We claim as our invention- Achemical fire-extinguisher consisting of a '15 receptacle, the fragile vessels D D, arranged upon each side of the center, supported upon trays secured to the cover thereof, a discharge- GEORGE H. COREY. HARRIS B. MITCHELL.

' Witnesses:

M. B. EATON, L. E. DYER. 

